Electric condenser



B. R. WEBSTER ELECTRIC CONDENSER May 5, 1925.

Patented May 5, 1925'.-

UNITED "STATES PATENT- OFFICE.

BESTER R. WEBSTER, CHICAGO, ILLINOIS, ASSIGNOR TO RELIANCE DIE & STAMP-ING COMPANY OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

- ELECTRIC CONDENSER.

To all whbm it may concern:

Be it known that I, BESTER R. WEBSTER, a citizen of the United States,residing at Chicago, in the county of Cook and the State of Illinois,have invented a certain new and useful Improvement in ElectricCondensers, of which the following is a full, clear, concise, and exactdescription.

My invention relates to electric condensers whose sides are constructedof plates which are received in retaining grooves milled in theirsupports.

Hitherto these grooves have been of uniform width throughout theirdepth.

As condenser plates vary slightly in thickness, it is diificult to holdthem all tightly in thereceiving grooves thus formed.

I overcome this defect by inwardly .conveying the sides of each gi'ooveinto which a condenser plate is cramped; the thicker plates beingcramped nore than the thinner ones in orderthat they may be all broughtto the proper places, relatively.

The invention will be more fully explained in connection with theaccompany-v ing drawing in which r Fig. 1 is a side elevation of acondenser whose plates are assembled in accordance with my invention;

Fig. 2 is an axial sectional view;

Fig. 3 is a view on line 33 of Fig. 1; I

Fig. 4 is an enlarged view showing the construction of my invention; and

Fig. 5 is a view showing how similarly sized grooves receive andtightlyhold plates of dilferent thickness.

The condenser illustrated has one side in the form of a stator and theother side in the form of a rotor. The'stator side of the condenserincludes the condenser plates 1 received in the annular grooves 2 formedin the rods 3. These rods are assembled with the end plates 4 and 5 soas to space these end plates apart.

The rotor side of the condenser includes the, plates 6 received in theannular grooves 7 formed in the sleeve 8 upon shaft 8. This shaft isjournaled in the plates 4 and 5 so that the rotor may be turned, therebeing a dial knob 9 upon the front end of the shaft to aid in the properadjusting movements of the rotor.

The receiving grooves in the rotor shaft are illustrated in detailinFig. 4. The resides converging inwardly, each sloping inwardly towardthe other. All plates are preferably received in the grooves to the sameextent, the thicker plates being cramped at their supported edges morethan the thinner ones, as indicated at the left and right of Fig. 5respectively.

By means'of my invention the plates of different thickness are not onlyreceived tightly in the grooves that are uniform in dimensions andshape, but the median planes of the plates are equally spaced, so thatthe danger of short circuiting and improper condenser action is avoideHaving thus described my invention, -I claim 1. An electric condenserwhose sides are formed of plates and a plate support having a platereceiving groove .whose sides inwardly converge.

2. An electric condenser whose sides are formed of plates and a platesupport having a plate receiving groove, the outer portions of the sidesof the groove being substan tially parallel and the inwardly continuingportions of said sides inwardlyconverging.

3. An electric condenser'whose sides are formed of plates and a platesupport having a plate receiving groove, each of whose sides inwardlyslopes toward the other.

4. Any electric condenser whose sides are formed of plates and a platesupport having a plate receiving groove, the outer portions of the sidesof the groove being substantially parallel and the inwardly continuinportions of said sides inwardly sloping eac toward the other. v

In witness whereof, I hereunto subscribe my name. I

BESTER R. WEBSTER.

